期刊
PHYSICAL REVIEW LETTERS
卷 84, 期 25, 页码 5912-5915出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.84.5912
关键词
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It is shown that the universal set of quantum logic gates can be realized using solid-state quantum bits based on coherent electron transport in quantum wires. The elementary quantum bits are realized with a proper design of two quantum wires coupled through a potential barrier Numerical simulations show that (a) a proper design of the coupling barrier allows one to realize any one-qbit rotation and (b) Coulomb interaction between two qbits of this kind allows the implementation of the CNOT gate. These systems are based on a mature technology and seem to be integrable with conventional electronics.
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